Greg Stuart realizes Michael Pisaro's first and haunting "Hearing Metal" on tam-tam, a large piece of metal which is mic-ed and recorded to create a vast and rich sound when played by bow or hand, here in 3 compositions layering the instrument in combination with sine tones.

The 60-inch ("Mikrophonie") tam-tam is a large piece of metal, a proto-sculpture. Brancusi might have altered it: rounding and tapering the edges, making an oval instead of a circle, polishing the surface into smooth gold.

The tam-tam is also a vast sound landscape-an instrument that makes noise at the slightest provocation. A resonance is created just in the act of walking past the instrument or breathing on it ... that is, if your ear (or a microphone) is close enough to hear it. Wherever it is touched with a bow or a hand, it responds with chaotic, unpredictable complexity, never producing the same sound twice.

I have attempted to work within the givens of this landscape, to allow some of its implicit contours to reveal themselves-by collecting sounds, giving them a duration, putting them into a clear structure, and cutting a path through them with pure tones.

Sleeping Muse is something like a four-part chorale of bowed sounds, with a melody made up of long sine tones buried in the sounds.

The Endless Column is a collection of sixty extremely light, close recorded strikes, randomly ordered, but with a rising scale of sine tones mixed in, more or less within the central frequency range of the tam-tam (from 50 to 671 hz).

Sculpture for the Blind arranges eight layers of bowed sounds (which are then released) along a pattern of lengthening durations and combined with a sine tone trio, again woven into the sounds of the tam-tam.

Hearing Metal 1 is the product of close collaboration between composer and performer. The piece evolved as Greg made test recordings based on my suggestions and then sent them to me. As it happened we feel we fell into its world, in order to move it slightly towards our own."-Michael Pisaro

"The first Stockhausen I ever heard, back in college, was Microphonie and I've always remained partial to the general family of sounds elicited therein. So it's not surprising, all else aside, that I'm drawn to the music here, derived from the excitation, via bows and strokes of a 60" tam-tam much like that used by Stockhausen, sensitively played by Greg Stuart. The added flavor, as is Pisaro's wont, is the integration of sine tones pitched very close to the range of the tam-tam itself, becoming almost indistinguishable from it insofar as the sine throbs might well be mimicked by bowing action on the metal. One soon ceases to care as the music, infinitely complex when played at volume, envelops the listener. Pisaro describes "Sleeping Muse" as "something like a four-part chorale of bowed sounds" and merely reading about the approach might summon up drone-y, rather flaccid work but this is nothing of the kind. As rich, (relatively) tonal and flowing as the music is, the range of detail, the the endless swirls are entirely absorbing; one guesses that the sine tones are the spinal fluid here, imparting a kind of meaning to the arcing tones.

"The Endless Column" (the three pieces, by the way, are all titled after Brancusi sculptures) slows things done lusciously, a series of strokes (recorded individually, ordered randomly, one after another) swaddling a slowly rising sine tone which, again, is more felt than heard. The deliberateness of this piece is wonderful; one gets something of a prayer bell feeling but with the peals entirely dissembled. The final work, "Sculpture for the Blind", superimposes eight layers of bowing, again interwoven with sine tones, the durations of the bowing increasing over the ten minutes of the piece. The structure thus falls midway between the preceding two, combining the drone of "Sleeping Muse" with the slow pulse of "The Endless Column" as well as containing a fine, subtle grainy character that gives it a different coloration. Again, the focus one hears, on the part of both the composer and performer, keeps the music from drifting into gauze, not even close.

Wonderful recording, one of the best I've heard in recent months."-Brian Olewnick, Just Outside